Mkr is right, Enclustra's boards have been sampling since last year and shipping since early April. They actually have prices published online, which helps in finding out whether this fits project requirements (without having to ask for quotations). We displayed these modules in their finished state during Embedded World in February on a shared booth - we were showcasing our port of Android and emulation of the Zynq, and Enclustra their hardware.
Also, the Enclustra guys are a very nice people, easy to do business with :) They provide sample ipcores, design schematics etc. and have very good documentation.
With over 50 plug in boards for a wide range of applications (ADC, Video, Communications, Memory, etc) and a host of software drivers these types of platforms not only make prototyping easy, but also give you a platform for deployment too. The best of both worlds it seems.
I expect to see this development model grow dramatically now that the processors inside the FPGAs are more standard (ARM) and can leverage a much larger ecosystem of firmware and software support. With some standard APIs that are platform and plug-in board agnostic we will see these types of embedded designs going the route of single board computers. Hardware is all done- just add your software (and FPGA-based algorithm acceleration) and you are done!
@Max: yeah I think we will see more of these kind of SoCs. I think Altera already has Cyclone V SoC with dual ARM Cortex A9 cores and they are planning to launch new series of SoC "Arria" in 2013-14 time frame:
As far as I can recall, thsi is the first deployment I've seen of these SoC-class FPGAs in a commercial product (other than development and evaluation boards and suchlike). In the not-so-distant future I think we'll be seeing a whole lot of this sort of thing...